/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Framework/PhysicsProxyBase.h
void SetVelocitySmoothing ( const [Chaos::FVec3](API\Runtime\ChaosCore\Chaos\FVec3) CurrV, const [Chaos::FVec3](API\Runtime\ChaosCore\Chaos\FVec3) CurrX, const int32 ErrorVelocitySmoothDuration )